Machine for operating upon warps



Oct. 10, 1939. M. N. NQLING 2,175,277

MACHINE FOR OPERATING UPON WARPS Filed July 12, 1937 5 Sheets-Sheet 1 F u w 7'0 HARNEaEs Mun: ENo

INVENTOR Martin /V. NOl/flj ATTORNEYS Oct. 10, 1939. M. .N. NOL ING MACHINE FOR OPERATING UPON WARPS Filed July l2, l9"? 5 Sheets-Sheet 2 m N E O M M rmm W T mm fi t r M .I/-,

Oct. 10, 1939. M. N. NOLING MACHINE FOR OPERATING UPON WARPS f5 Sheets-Sheet 3 Filed July 12, 1937 ling INVENTOR Martin N 1 No BY adok,

ATTORNEYS Oct. 10, 1939. 7' M. N. NOLING IACH INE FDR OPERATING UPQN WARPS I 5 Sheets-Sheet 4 Filed July 12, 1937 Nolina I fia'KMQ/W;

Marti/7 BY W44 ATTORNEYS Oct. 1 0, 1939.

MACHINE FOR OPERATING UPON WARPS Filed July 12, 1937 5 Sheets-Sheet 5 /7, /.as ATTORNEYS M. N. NOLING 2,175,277 I Patented Oct. 10, 1939 PATENT OFFICE 2,175,277 MACHINE FOR OPERATING UPON WARPS Martin N. Noling, Rockford, Ill., assignor to Barber-Colman Company, Rockford, Ill., a corporation of Illinois Application July 12, 1937, Serial No. 153,128

31 Claims.

The invention pertains to warp-tying and similar machines for operating upon warps; and has particular reference to an improved selector mechanism for operating upon leased warps. Also it concerns more especially a selector mechanism intended for use on silk, rayon, celanese, and similar yarns.

The general object of the invention is to provide a new and improved selector mechanism of simple and inexpensive construction, for use in machines of the character disclosed in the patent to Burt 'A. Peterson, No. 2,011,115, issued August 13, 1935.

More specifically, the invention provides a selector mechanism which is more certainin oper ation, minimizes failures and renders it possible to operate upon warps of higher sley.

Another object is to produce a selector mechanism adapted for operation upon warps of multiple lease.

A further object is to provide a selector mechanism for warp-tying machines having an improved form of thread-clamping means capable of maintaining the threads under proper tension in the operation of presenting them to the tying means, thereby minimizing breakage of the threads.

Still another object is to provide a selector embodying an improved thread-clamping means capable of operating upon a wider range of thread sizes without adjustment.

The objects of the invention thus generally set forth are attained by the construction and arrangement illustrated by way of example in the accompanying drawings, in which Figure 1 is a transverse sectional view through a warp-tying machine showing in end elevation a selector unit and its associated mechanism in the at warp position.

Fig. 1 is a schematic view illustrating the selecting operation.

Fig. 1 is a fragmentary perspective view illustrating the thread-selecting operation.

Fig. 2 is a fragmentary side elevational view of the warp-uniting mechanism.

Fig. 3 is a vertical sectional view taken approximately in the plane of line 33 of Fig. 1.

Fig. 4 is a sectional view taken in the plane of line 44 in Fig. 6.

Fig. 5 is a perspective view of a supporting tube forming part of the selector mechanism.

Fig. 6 is a sectional view taken in the plane of line 66 of Fig. 2 and showing one of the selectors the at warp position.

Fig. '7 is a detailed sectional View taken approx imately in the plane of line 1-4 of Fig. 6.

Figs. 8, 9 and 10 are sectional views taken approximately in the plane of line 88 of Fig. 1 and illustrating the operation of selecting the '5 threads. 7

The improved selector mechanismis intended for use on leased warps whether of single or multiple lease, with the threads of each warpin crossed relation and disposed intwo intersecting 10 planes. As shown in Figs. 1 and 1 a single lease warp is shown with the adjacent threads arranged in crossed relation, the leasing of the threads being accomplished in any suitable and well known manner. 15

The improved selector mechanism being especially designed for use in a warp-tying machine such as that disclosed in the said Peterson patent, and the associated mechanism being substantially the same as in said patent, it is deemed unnecessary herein to enter into a detailed description of the machine except in so far as it concerns the novel subject matter of this invention. Referring to Fig. 1, the warps to be operated upon are tightly held in two sets of clamps so as to be disposed in generally parallel relation one above the other. I and 2 designate the lower clamps, for the old warp, which clamps are carried by the bed of the machine on opposite sides thereof. 3 and 4 designate the upper clamps, for the new warp, mounted on the warp carriage. The thread selecting and uniting mechanism is mounted upon a carriage 5 arranged for traveling movement on the bed of the machine in a direction transverse to or edgewise of the warps. This mechanism carriage 5 is fed step-by-step toward the new warp, the feed being controlled in accordance with the spacing of the threads of the said warp in 'a well known manner. The warp carriage carrying the old warp is fed stepby-step under the control of the threads of this warp to carry it toward the selecting mechanism for the purpose of compensating for any difference in the widths of the two warps, and for vari- 'ationsin the spacing of the threads of the old warp. j

The threads of' the two warps are maintained in leased condition by means of four lease, rods 6 suitably mounted on the mechanism carriage, and the improved selector mechanism is arranged to operate upon the threads of the two warps adjacent the points of crossing of the threads. Said mechanism comprises two selectors, one for each warp, and each includes a thread clamp operative to hold the threads when severed from the portions held in the clamps l and 3 to maintain them under proper tension during their delivery to the knotter mechanism.

Referring now to Figs. 1 1 and 6, the thread selecting operation is accomplished in the case of each of the warps by means of a pusher and an associated hook arranged for reciprocation in timed relation toward and from the warp edgewise thereof. The pushers are adapted to engage the threads of their respective warps eccentrically of the lines of crossing thereof for the purpose of elfecting the relative-separation of the first of the threads of each warp from the remaining threads. Preferably each of the pushers is dual in character in that it comprises two pusher elements in the form of laterally spaced fingers l and 7' (Figs. 1 and 6). 'As shown in Fig. 1 the pusher fingers are notched at their forward ends and are disposed at opposite sides of a hook 8.

As above indicated, the threads of eachof the warps are disposed in two intersecting planes and this arrangementis utilized to advantage in performing the selecting operation. Thus in addition to the reciprocating motion imparted to the pushers, means is provided to impart a slight oscillating movement thereto to shift the fingers l and 1 thereof from one of said planes to the other in successive cycles. 'In Figs. 1 and 1 the two intersecting planes are occupied by leased threads designated'by the letters a and b, the thread a being the one to be selected. It being the function of the pushers to effect the relative separation of the first of threads in each warp from the remaining threads, the fingers 'l and l are initially positioned in plane b and when the pusher is advanced toward the warp, said fingers clear the thread to be selected, which is located in plane a, and engage with the first of the threads in plane b. In the continued advance of the pusher fingers, the first of the threads in plane b, together with the threads immediately beyond it, are moved into spaced or separated relation to the thread to be selected which is disposed in plane a. In the next cycle the thread to be selected is located in plane b and the pusher fingers in their advance, clear said thread and engage with the first of the threads in plane a.

When the thread to be selected has thus been separated from the remaining threads, the hook 8 is advanced into a position to seize such thread. For this purpose the hook 8 is preferably mounted for pivotal movement. It comprises a tongue 9 depending from a generally U-shaped member ID. The legs of the latter are pivoted at l l upon an axially movable support in the form of a tube I2 (Figs. 5 and 6). Upon the advance of the hook with its supporting tube [2, a slight picking motion is imparted to the hook. For this purpose the U-shaped member ID of each selector carries a cam lug [3 (Figs. 6 and 8) adapted to cooperate with a similar cam lug I 4 mounted in the path of movement of the hook member ID.

The lugs M for the two selectors are respectively carried by two vertically slidable plates l5 connected by a contractile spring l6 and suitably mounted in bracket arms l'l; To limit its movement by the spring l6, each of the plates l5 has a flanged end I8. As will be seen from a comparison of Figs. 8 and 9, when the tubes l2 carrying the hooks 8 are advanced toward their respective warps, a leading cam surface l3 on each of the lugs l3, engages a cam surface M on the corresponding lug I4, thereby imparting a pivotal movement to the hook 8 against the action of a restraining spring I 9. This movement is so timed relative to the separation of the selected threads in the manner above described, that the hooks 8 are rocked or deflected into a position such as to clear the threads. Thereupon in the continued advance of the hooks, the cooperating lugs disengage and the hooks are swung inwardly or toward each other by their springs l9 (Fig. 10). Upon the reverse movement of the hooks to withdraw the separated threads, cam surfaces l3 and u on the coacting lugs engage, but in this instance, the plates l5 are permitted to move outwardly against the action of their connecting spring [6. Thus in their return movements, no pivotal motion is imparted to the hooks.

In the present instance, the pusher finger 'l and 1' of each of the selectors are formed as. rigid forward extensions of a cylinder 26 slidable within one of the supporting tubes !2 (Fig. 6). Said fingers diverge slightly for engagement with the threads of the warps at points spaced from the line of crossing of the threads. Between these fingers of the selector is provided a clamp formed. by the tongue 9 of the selector hook 8 and by a member 2| disposed centrally between the pusher element l and l. The clamping member 2i is in the form of a yieldable plunger disposed within the cylinder 2% and having a fiat forward clamping face arranged for cooperation Y with the rear face of the tongue 9. The plunger is preferably constructed so as to be of relatively small mass and has a rearward extension or rod 22 provided with a fiat sided head 23 (Fig. 7)

for engagement with notches 24 in the rear end of a stationary tubular element 25 to limit forward movement of the plunger. The rod 22 is slidable through a nut 25 screw-threaded into the tubular element 25 and forming an adjustable abutment for a spring 21 surrounding the rod and engaging with the enlarged forward end of the plunger. By adjusting the position oi the nut axially of its supporting. element 25, the tension of the spring may be adjusted as desired.

The spring 21 is made of substantial length and in the operation of clamping a thread, the plunger yields slightly under the action of the tongue 9 (see Fig. 6) as the latter approaches the end of its return or withdrawing stroke so that the thread is gripped between the tongue and the face of the plunger. Preferably the plunger has a relatively loose fit in the cylinder 29 so as to be capable of self-alinement with the rear face of the tongue 8. The plunger H is prevented from turning by the head 23 engaging in the notches 24.

The mechanism carriage 5 has a main supporting standard 28 rising from the base of the carriage (Fig. 2) and providing a support for the selectors and associated parts. The standard is suitably bored to receive the hook-supporting tubes 1 2 of the two selectors, the pusher cylinders 26 being in turn slidable and rotatable within the tubes 12. The latter are held against rotation in their axial movement by a plate 29 (Figs. 1 and 8) secured to the front face of the standard 28 and having opposite end portions projecting into slots 3! cut in the respective tubes l2 (Fig. 5).

Conveniently the ends of the plate 29 thus projecting laterally into the tubes through the slots 3!, have formed integral therewith, the tubular supporting elements 25 which extend rearwardly from the plate axially of the cylinders 28 (Fig. 6). The springs H! which cooperate with the cam lugs l3 and 14 to govern'the movements of in any suitable way the hook 8, are anchored a't'their rear 'ends to the 'U-shaped members [0 and at'their forward ends Referring to Figs. 4, 5, 6 and 8, reciprocable motion is imparted to the tubes i2 by cam means disposed rearwardly of the tubes. For this purpose the tubes areformed with notches 34 (Figs.

-5 and 6) for receiving the opposite ends of an latter are "formed with solid rear extensions 4! which project from the rear ends of the tubes l2 and are formed with annular grooves 42 to receive the opposite ends of an arm 43 on a slide 44 which is mountedfor endwise movement in a bracket 45. In this instance, the slidecarries a roller 46 engaging in a suitably shaped cam groove 41 cut in one face of a cam disk 48. Both cam disks and 48 are fast on a shaft 49 journaled in a supporting standard 50 and driven as by means of a hand crank5l.

To :impa't oscillatory motion to each of the cylinders 29 and thereby to-the pusher fingers l 'derszil, the tubes [2 being cut away forwardly of'the notches 34 as indicated at 56 to permit of axial movementof the 43 relative to the tubes in the actuationof the cylinders 20. At

their lower ends the rack bars are formed with teeth: 51 for engagement by two gear segments formed on the forward ends of two lever arms 58 (Figs. 2 and 3) rigidly secured together and pivoted at 59 on the standard 50'. Lever arms 58 carry double roller followers coacting with the periphery faces of cam disks 4!] and 48 which are suitably shaped for this'purpose. 7

It will be seen that when the shaft 49 isrotated (in this instance counterclockwise), an

oscillatory motion is imparted to each of the pusher cylinders 20 followed by a-forward or axial movement, and thereupon axial movements are imparted to the hook 8. Whilethe segments 58 for operating the rack bars 52 and 53 move in unison, due to the fact that the rack bars 52 and 53 engage with diametrically opposite sides of the pinion 54 and 55 the cylinders 20 are oscillated inopposite directions.

In the thread selecting operation, the two selectors act simultaneously upon theold and'new warps, first to effect a separation of the respective threads to be selected and then to seize and clamp the selected threads, whereupon the ends held in the clamps l and 3 are severed by the operation of a pair of shearing devices BI (Figs. 1 and 6) as in said Peterson patent. The selected threads are then brought into position for engagement by a slide 62 whose'function it is to present the threads to the knotter mechanism indicated generally at 63 (Fig. 1). The means herein employed for thus positioning the threads comprises a pair of fingers 64 and 65 (Fig. 3)

. pivoted to the standard 28 and having intermeshing segments 66. At their rear ends the fingers are connected by a contractile spring 61, and one of the fingers carries a roller 68 coacting with a cam disk 69 operative to swing the fingers together and thereby position the two threads in the path of the slide 62 which is suitably forked for this purpose. The cam disk 69 is driven from the main camshaft 49 by a gear train consisting of a gear 1|], fast on the shaft 49, an idler H and a gear 12 rigid with the cam 69.

In the operation of the machine the mechanism carriage is advanced under the control of feelers 13 and 14 in the manner set forth in said Petersonpatent so as to maintain the selector in the atwarp position.

At the beginning of each thread-selecting cycle, the pusher cylinder is oscillated by cam actuated levers 58 and rack bars 52 and 53 to shift the fingers 1 and 1 into the plane occupied by the thread disposed beyond that to be selected. Thus assuming that the thread a (Figs. 1, l and l is: to be selected the-pusher fingers are shifted into the plane occupied by thread'b out of alinement withthethreads to be selected, the shaft 49 being rotated in a' counterclockwise direction. Thereupon the pusher fingers are advanced in the plane' of thread I) by the operation-of cam disk 43 and slide; 44 connected with the rear ends of the two pusher cylinders '29.

"In this movement each pair of pusher fingers clears the thread a to be selected and moves into engagement with the first of the remaining threads. The extent of movement of the pushers is such as to effect the separationof the first of the threads in each of the warps relative to the remaining threads as shown in the dotted line position of thread a in Fig. 6.

In the continued rotation of the shaft the thread seizing and clamping hooks '8 are advanced by the operation of camdisk 49 acting upon slide 36 and its connection'with the rear ends of the tubes [2. As each hook advances, the leading surface l3 of lug H on the hook member l0 engages with the surface M of cam lug l4, causing the hookto swing against the 'action. of its restrainingspring I9 so as to deflect the tongue 9 into a position (Fig. 9) such as to clear the separated thread a until the tongue has advanced to a position beyond the vertical plane of each thread. When lug i3 becomes disengaged from lug M, the hook is swung by its spring l9 to carry the tongue 9 into position behind the separated thread. Thereupon a withdrawal stroke of predetermined length is im parted to the tube l2 by the operation of its cam,

and the separated thread is drawn rearwardly Near the end of the withdrawing stroke the tongue 9 of the hook 8 carries the thread against the plunger 2|, compressing the spring 2'! slightly and clamping the" thread with a predetermined pressure between the rear face. of the tongue and the fiat forward iface of the plunger 2i (Figs. 6 and 10). In the return movement of each of the hooks, the cam surface id of the lug l3 engages the cam surface M of the lug 14 so as to move the plate l5 against the action of the spring "is Thus the hooks are deflected only in their movements toward their respective warps.

' The two threads tobe united, having been "seized and clamped by their'respective selectors,

the shearing devices 6| are operated to cut off theends of thethreads held by the clamps l and 3 and the positioning fingers 64' and 65 are operated to bring the threads together for engag ment by the slide 82 which. operates to present the twothreads to the knotter 53. In this operation the threads are held between the hook tongues 9 and yieldable plungers 2| with sufficient pressure to maintain the same under proper tension while being permitted to slip as may be necessary to avoid breakage. As soon as the-first of the threads of the two warps have thus been separated and clamped, the pushers are retracted, and then each is shifted and advanced in a different plane in the succeeding thread selecting cycle. While the pushers are thus being advanced, the hooks remain retracted so as to continue to hold the previously selected threads while they are being advanced to the knotter mechanism.

It will be observed that the selector mechanism provided is of simple construction and capable of being manufactured at a lower cost than prior mechanisms of this character. The selecting operation has been found to be more certain and positive, insuring selection of only one thread at a time from each warp, and permitting tying of warps of higher sley. Also it will be seen that due to the method of selection employed, the selector mechanism is capable of use uponeither single or multiple lease warps.

Another advantageous feature is the construction of the selector clamp. While the threads are being presented to the knotter mechanism by the action of the slide 62, the threads are clamped between the hook tongues 9 and their respective plungers 2| with sufficient pressure to maintain the same under proper tension while permitting the necessary slippage without breaking the threads. Moreover, it has been found that a wide range of thread sizes can be operated upon without changing the adjustment of the tensioning springs 21 of the clamping plungers 2|.

I claim as my invention:

1. A machine for operating upon warps having, in combination, means for supporting a leased warp with the threads thereof disposed in two intersecting planes, means for selecting threads from such warp comprising a thread pusher mounted for movement toward and from the warp edgewise thereof comprising a pair of laterally spaced members, means for actuating said pusher in a path disposed laterally of the thread to be selected and into engagement with the adjacent thread so as to move the latter away from the thread to be selected, and means comprising a reciprocatory member and a hook movable relative to said member for seizing and clamping the selected threads at a point between said spaced members of the pusher.

2. A machine for operating upon warps having, in combination with thread-uniting means, means for supporting two leased warps in parallel relation with the threads of each warp disposed in two intersecting planes, means for selecting threads from said warps comprising two thread pushers mounted at one side of the uniting means for movement toward and from the respective warps edgewise thereof, means for actuating said pushers along paths disposed laterally of the threads to be selected and into engagement with the adjacent threads so as to move the latter away from the selected threads, means for withdrawing the selected threads and clamping the same with a predetermined pressure permitting slippage of the threads, and means disposed between the selecting means and the uniting means for moving the selected threads together for operation thereon by the uniting means.

3. A machine for operating upon warps having, in combination, means for holding a leased warp, means for withdrawing threads from the Warp, means for pushing the adjacent threads away from the thread to be selected and away from said withdrawing means, said withdrawing and pushing means being movable toward and from the warp edgewise thereof, and means coacting with said withdrawing means to clamp the selected threads.

4. A machine for operating upon warps having, in combination, means for holding a leased warp, means for withdrawing threads from the warp, means for pushing the adjacent threads away from the threads to be selected for engagement by said withdrawing means, said withdrawing means comprising a thread-clamping element reciprocable edgewise of the warp and having a withdrawing stroke of a predetermined length, and means coacting with said element near the end of the withdrawing stroke to clamp the selected thread. 7

5. A machine for operating upon warps hav ing, in combination, means for supporting a leased warp, means for withdrawing threads from the warp, means for pushing the adjacent threads away from the thread to be selected for seizure by the withdrawing means, said pushing means comprising a member mounted for reciprocation edgewise of the warp and also for rotational movement, means for oscillating said pusher to shift it from a position out of alinement with the threadto be selected and into alinement with the adjacent thread, and means for reciprocating said pusher and operative to move it into engagement with the adjacent thread.

6. A machine for operating upon warps having, in combination, means for holding a leased Warp, a member reciprocable edgewise of the warp for withdrawing threads from the warp, means for pushing the adjacent threads away from the thread to be selected for seizure by the withdrawing means, said pushing means comprising a member mounted for reciprocation edgwise of the warp and also for rotational movement, means for oscillating said pusher to shift it from a position out of alinement with the thread to be selected and into alinement with the adjacent thread, means for reciprocating said pusher and operative to move it into engagement with the adjacent thread, and means for reciprocating said withdrawing means to effect seizure of the separated thread.

'7. A machine for operating upon warps comprising, in combination, means for supporting a leased warp having threads disposed in two intersecting planes, and means for selecting threads from the warp comprising a thread pusher shiftable transversely of the threads and movable in a direction edgewise of the warp with the pusher disposed in said two planes successively.

8. A machine for operating upon warps comprising, in combination, means for holding a leased warp having threads disposed in two intersecting planes, and means for selecting threads from the warp comprising a pusher movable in a direction toward and from the warp edgewise thereof, said pusher comprising a pair of threadengaging elements spaced apart laterally on opposite sides of the line of crossing of the threads,

and means for shiftingsaid elements from one of said planes to the other successively.

9. A'machine for operating upon warps com-- prising, in combination, means for supportin a leased warp having threads disposed in two intersecting planes, means operative in successive cycles to select successive threads from the warp comprising a pusher movable along an axis disposed substantially in the plane of said warp edgewise thereof in each of said cycles, and means for shifting said pusher on said axis from one of said planes to the other in each of said cycles. 7

10. In a machine for operating upon leased warps having threads disposed in two intersecting planes, thread-selecting means comprising a reciprocable thread-engaging hook, a pair of thread-engaging elements disposed on opposite sides of said hook, and means for imparting axial and oscillatory motion to said elements to move them first in one of said planes and then in the other whereby to effect a separation of certain of the threads relative to the remaining threads for seizure bysaid hook.

11. In a warp-uniting machine, means foreperating upon leased warps having threadsdis posed in two intersecting planes, said means comprising a hook mounted for reciprocation substantially along the line of crossing of the threads, and a thread pusher movable first in one of said planes and then in the other along paths spaced a short distance from said line of crossing of the thread.

12. In a warp-uniting machine, a selector mechanism for operating upon leased warps having threads disposed in two intersecting planes, a pusher movable axially first in one plane and then in the other along paths spaced laterally from the path of crossing of the threads, said pusher being operative to efiect the separation of certain of the threads from the remaining threads, and a hook movable axially substantially along said line of crossing of the threads and operative to seize and withdraw the separated threads.

13. In a warp-uniting machine, a selector mechanism for operating upon leased warps having threads disposed in two intersecting planes, a pusher movable axially first in one plane and then in the other along paths spaced laterally from the line of crossing of the threads, said pusher being operative to effect the separation of certain of the threads from the remaining threads, a hook reciprocable along a path substantially parallel to the path of movement of the pusher, and means for imparting a pivotal picking motion to the hook to efiect seizure of the separated threads.

14. In a warp-uniting machine, a thread selector mechanism for operating upon leased warps having threads disposed in two intersecting planes, means operable to separate certain of the threads from the remaining threads, a hook mounted for bodily movement toward and from the warp edgewise thereof, and means operative in such bodily movement of the hook for imparting a picking motion thereto as it moves past the separated threads and toward the warp.

15. In a warp-uniting machine, a thread selector mechanism for operating upon leased warps having threads disposed in two intersecting planes, means operable to separate certain of the threads from the remaining threads, a hook mounted for movement toward and from the warp edgewise thereof, and cam means operative only as the hook moves toward the warp to swing the hook laterally first to one side of and then into position beyond the separated thread.

16. In a warp-uniting machine, a thread selector mechanism for operating upon leased warps having threads disposed in two intersecting planes, means operable to separate certain of the threads from the remaining threads comprising a hook mounted for movement toward and from the warp edgewise thereof, and means for imparting a pickingmotionto the hook as it moves past the separated threads, said means comprising a pair of cam members engageable to cause a temporary deflection of the hook as it moves toward the Warp, and engageable to prevent such defiection in the movement of the hook in a direction away from the Warp.

17. In a machine for operating upon leased warps, a thread-selector mechanism comprising means operable to separate certain of the threads from theremaining threads, means for seizing and withdrawing the separated thread comprising a member movable axially toward and from the warp edgewise thereof, a hook pivotally mounted on said member, cam means operative as the hook moves toward the warp to deflect the hook laterally to one side of the separated threads and then into position beyond the separated threads, and a spring yieldably restraining movement of said hookby said cam means, said cam means including a cam element adapted to yield when the hook moves in a direction away from the warp.

18. In a warp-uniting machine, a selector mechanism for operating upon leased warps having threads disposed in two intersecting planes, a tubular support reciprocable toward and from the warp edgewise thereof, a hook carried by said support, a thread pusher mounted for axial and rotational movements in said support, and means for actuatingsaid pusher and said support to effect the separation of certain of the threads of the warp from the remaining threads and the seizure of said threads by said hook.

19. In a warp-tying machine, a selector mechanism operative to seize and clamp the threads of said warp successively, said mechanism comprising a cylinder reciprocable towardand from the warp edgewise thereof, thread-separating elements carried by said cylinder, a tube supporting said cylinder, a hook carried by said tube and extending between said elements, a clamping member disposed axially of said cylinder, and means for imparting axial and rotational movement to said cylinder and reciprocable movement to said tube.

20. In a warp-tying machine, a selectormechanism for operating upon leased warps having threads disposed in two intersecting planes, means operable to separate certain of the threads of the warp from the remaining threads comprising a thread pusher reciprocable first in one: of said planes and then in the other, a hook reciprocable along a path parallel to the movement of the pusher, a tube carrying said hook, said pusher comprising a cylinder mounted in said tube for axial and rotational movement, a yieldable thread-clamping member disposed within said cylinder, and means for actuating said cylinder and said tube, said hook being adapted to coact with said clamping member to hold the selected threads. I

21. In a warptying machine, selector mechanism for operating upon leased'warpshaving adjacent threads disposed in two planes, said mechanism comprising a pusher movable axially first in one plane and then in the other to effect the successive separation of threads from the remaining threads of the warps, a clamping member, and means operative upon the separated threads to seize and clamp the same against said member.

22. A machine for operating upon warps having,-in combination, means for supporting a leased warp, and means for selecting threads from such warp comprising a thread pusher and a hook mounted for reciprocation substantially in the plane of the warp edgewise thereof, means for actuating the pusher to effect the separation of certain threads from remaining threads of the warp, means for actuating the hook to seize and withdraw the separated threads, and a clamping member coacting with said hook to hold the se lected threads.

23. In a warp-tying machine, selector mechanism for operating upon leased warps having ad- J'aoent threads disposed in two planes, said mechanism comprising a pusher movable axially first in one plane and then in the other to effect the successive separation of threads from the remaining threads of the warps, a yieldable clamping member, and a hook mounted for reciprocation edgewise of the warp and operative upon the separated threads to seize and clamp the same against said member.

24. In a warp-tying machine, a thlead selector mechanism comprising a thread-clamping member, a stationary abutment, a coiled compression spring of substantial length interposed between said member and said abutment, said member having a clamping face, and a reciprocatory thread-engaging hook having a clamping face adapted to coact with the face of said member to hold the thread between said faces against the action of said spring.

25. In a warp-uniting machine, means for supporting a warp and means for selecting and clamping threads from such warp comprising a reciprocatory hook having a thread-clamping stroke of a predetermined length and having a flat clamping face, a clamping member also having a flat clamping face for coaction with the face of said hook, means for loosely supporting said member for axial movement with said hook at the end of the clamping stroke, and a spring for restraining movement of said member by said hook.

26. In a warp-uniting machine, means for supporting a warp, and means for selecting and clamping threads from such warp comprising a reciprocatory hook element having a thread clamping stroke of a predetermined length, and a clamping element for coaction with said hook element mounted for movement with the hook at the end of said clamping stroke, one of said elements being yieldable in such clamping action.

27. In a warp-uniting machine, means for supporting a warp, and means for selecting and clamping threads from said warp comprising a reciprocatory thread pusher mounted for movement substantially in the plane of the warp edgewise thereof, said pusher including an elongated cylinder, a reciprocatory hook having a threadclamping stroke of a predetermined length and a clamping member yieldably mounted within said cylinder for movement in a direction axially thereof and adapted for coaction with said hook at the end of its clamping stroke.

28. In a warp tying machine, means for supporting a leased warp with the threads thereof disposed in two intersecting planes, a traveling carriage movable toward one edge of said warp, a device reciprocable on said carriage for movement past the first warp thread disposed in one plane and into engagement with the next thread disposed in the other plane so as to separate said threads, tying means on-the-carriage,-a hook mounted for movement with said device and also independently thereof, and means for moving said hook relative to said device first intoposition to seize the first mentioned thread and then reversely to draw it toward said-tying means.

29. A machine for operating upon warps comprising, in combination, means for supporting a leased warp having threads disposed in two intersecting planes, and a thread selecting mechanism comprisinga device mounted at one edge of the warp'and'means operative to impart lateral and axial movements to said device to position and move the device past the first thread disposed in one of said planes and into engagement with the next thread disposed in the other plane, said device shifting in its lateral movement in a direction transversely of the warp.

30. A machine for operating upon warps comprising, in combination, means for supporting two leased warps one above theother in parallel relation with the threads of each warp disposed in two intersecting planes, and mechanism operative in successive cycles for selecting threads from each of said warps comprising two unitary devices mounted in spaced parallel relation for reciprocatory movement toward and from the respective warps edgewise thereof, each of said devices including a shiftable element movable along paths disposed laterally of the thread to be selected and into engagement with the adjacent threads so as to move the latter away from the selected thread, means for reciprocating said devices in unison, and means operable in each of said cycles to impart shifting movements to the thread-engaging elements whereby to shift the same transversely relative to their respective warps.

31. A machine for operating upon warps comprising, in combination, means for supporting two leased warps one above the other in parallel relation with the threads of each warp disposed in two intersecting planes, and mechanism operative in successive cycles for selecting threads from each of said warps comprising two unitary devices mounted in spaced parallel relation for reciprocatory movement toward and from the respective warps edgewise thereof, each of said devices including an oscillatory element movable along paths disposed laterally of the thread to be selected and into engagement with the adjacent threads so as to move the latter away from the selected thread, means for reciprocating said devices in unison, and means operable in each of said cycles to impart oscillatory movements to the thread-engaging elements whereby to shift the same transversely relative to their respective warps, the last mentioned means including a pair of pinions one connected with each of said elements, a pair of parallel rack bars respectively meshing with said pinions at opposite sides thereof, and a power driven member for reciprocating said rack bars in unison. I

MARTIN N. NOLING. 

